Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2002-02-12
Phys. Rev. E 65, 046114 (2002)
Physics
Condensed Matter
Statistical Mechanics
12 pages, 10 figures
Scientific paper
10.1103/PhysRevE.65.046114
A thorough numerical investigation of the slow dynamics in the d=1 random field Ising model in the limit of an infinite ferromagnetic coupling is presented. Crossovers from the preasymptotic pure regime to the asymptotic Sinai regime are investigated for the average domain size, the autocorrelation function and staggered magnetization. By switching on an additional small random field at the time tw the linear off equilibrium response function is obtained, which displays as well the crossover from the nontrivial behavior of the d=1 pure Ising model to the asymptotic behavior where it vanishes identically.
Candia Antonio de
Corberi Federico
Lippiello Eugenio
Zannetti Marco
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